User's Manual

Printed Documentation
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Creating suitable download / upload test files:
Due to the high transfer rates possible with the AS4020 system, suitably sized test files
should be transferred. The recommended test file sizes are of the order of 1Mbyte
(uploading) and 10Mbyte (downloading).
We must also ensure that any file compression does not result in files appearing to be
transferred faster than they actually are. The recommended method for performing the
transfer tests (described in the next section) uses an FTP method that transfers files in binary
mode, without compression. However, as other utilities may not do this, the test files should
not be compressible.
To assist with this, Airspan provides a utility for generating uncompressible files of varying
sizes. Inside the .zip file embedded below are two files – “filegen.exe” and “generate.bat”. If
you do not have an electronic copy of this document, you can request the embedded .zip file
by email. Send your request to [e-mail]
Instructions:
1. Unzip the embedded .zip file. The files “filegen.exe” and “generate.bat” should be placed
into the FTP Site Directory that was recorded in the previous section.
Note: Use Windows Explorer to check that the files are in the correct location. Do not
use the “right-click” option to “Extract to folder …\FTP test file generation”, because a
new subdirectory will be created and the files placed there. You can use Windows
Explorer to move the files to the correct location if you have used this method to extract
the files, or have extracted them elsewhere on the hard disk.
2. Defragment the partition of the hard disk which contains the FTP Site Directory:
a. Opening Windows Explorer select the Drive letter containing the FTP Site Directory;
b. Right-Click on the drive letter and choose “Properties”;
c. Select the “Tools” Tab at the top;
d. Press the “Defragment Now…” Button;
e. When the defrag program opens, press the “Defragment” button.
Note: This may take many minutes to run, and may require some disk space to be
freed if there is less than 15% free disk space.
3. When the defragmentation is complete, navigate to the FTP Site Directory using Windows
Explorer.
4. Double-click on the “generate.bat” file.
Note: For information - The “filegen.exe” program takes the command line parameters
denoting the filename and size in Kbytes, and creates files containing random data (hence the
files cannot be compressed at all, they will grow in size if “zipped”). The “generate.bat” batch
file repeatedly calls the “filegen.exe” to create a set of uncompressable files of varying sizes.
You may wish to edit this file if you need different file sizes. The batch file will generate the
following files:
File Name File Size (Bytes)
100K 102,400
200K 204,800
500K 512,000
1M 1,048,576
2M 2,097,152
5M 5,242,880
10M 10,485,760
These numbers follow the binary data store convention of 1KB = 2^10 Bytes, 1MB = 2^20
Bytes.
The file generation process will take approximately 30 seconds to complete, depending on the
specification of the Server PC.